用java实现一个枚举类，通过编号(从1开始)得到30本世界名著

这里给出一个简单的例子：

public enum WorldFamousBooks {
    BOOK1("The Catcher in the Rye", "J.D. Salinger"),
    BOOK2("1984", "George Orwell"),
    BOOK3("To Kill a Mockingbird", "Harper Lee"),
    BOOK4("The Great Gatsby", "F. Scott Fitzgerald"),
    BOOK5("One Hundred Years of Solitude", "Gabriel Garcia Marquez"),
    // ... 省略其余25本书

    private final String name;
    private final String author;

    WorldFamousBooks(String name, String author) {
        this.name = name;
        this.author = author;
    }

    public String getName() {
        return name;
    }

    public String getAuthor() {
        return author;
    }

    public static WorldFamousBooks getByIndex(int index) {
        if (index < 1 || index > 30) {
            throw new IllegalArgumentException("Invalid index: " + index);
        }
        return values()[index - 1];
    }
}

使用方式：

WorldFamousBooks book = WorldFamousBooks.getByIndex(1);
System.out.println(book.getName() + " by " + book.getAuthor());

输出：

The Catcher in the Rye by J.D. Salinger